Emergency-button.



U. S. ALZ.

EMBRGB'NGY BUTTON. APPLICATION FILED SEPT. 2,1906.

nventoz PATENTBD JUNE 25, 1907.

` what I claim as new and desire to secure by UNITED STATES PATENT OFFICE.

URBAN ALZ, OF MOUNT WASHINGTON, MARYLAND.

EMERGENCY-BUTTON.

To @ZZ whom, t may concern: l l

Be it known that I, URBAN S. ALZ, a citizen of the United States, residing at Mount Washington, in the county of Baltimore and State of Maryland, have invented a Button, of which the following is a specification.

This invention is an improvement in buttons, and relates more especiall)T to that class known as emergency buttons or those which are provided with mechanical means for securing them in place without the employment of the usual needle and thread.

The principal objects of my invention are to produce a form of emergency button that can be easily and securely fastened'to the garment without in any way injuring the latter, can be conveniently removed without affecting its securing means, so that it may be again applied to a garment; will provide a convenient form of button, and will be susceptible of application to an ordinary button.

These and other though minor objects are attained by a peculiar device that is simple in construction and therefore can be manufactured and sold at comparatively small cost.

The following specification gives a full and complete description of my invention, and

Letters-Patent is more specifically set forth in the appended claims.

In the drawing: Figure l isa side elevation,` showing the application of my invention. Fig. 2 is a sectional view through the button and fabric to which it is attached. Eig. 3 is a detail view of the rear part or back of the button. Fig. 4 is a similar view of the front or main part of the button. Fig. 5 is a view showing a modification, wherein the invention is applied to an ordinary button of cornmerce. Fig. 6 is a detail view of the head and shank of the button.

Like letters and numerals of reference indicate like parts in all the views of the drawmg.

In carrying out my invention I construct the button in only two parts, and provide said parts with means formed integrally therewith by which they may be clamped to the fabric of a garment so as to lie at oppo site sides thereof and have the head of the button sufficiently removed from the fabric to receive the other part of the garment which is buttoned thereto in the usual man- Specicaton of Letters Patent.

Application ned september 2,1905. serial No. 276,873.

Patented June 25, 1907.

The part A, constituting the head of the button, is provided with a short shank a, which latter is centrally bored and threaded to receive a correspondingly threaded stud l) of the other part or back B, and though either style of thread may be employed I prefer to use the wood-screw thread, in which instance the threaded stud may be more easily passed through the fabric and is less liable to injure or break the same. The outer end of the shank a is recessed or cut to provide slightly projecting teeth or spurs a, preferably two at diamctrically opposite sides, and-so disposed or inclined as to enter or bite into the fabric should the part A of the button be turned backward, and thereby prevent such backward movement, it being obvious that said teeth or spurs will ride over the fabric when the parts A and B of the button are screwed together.

The part Bfs disk-shaped and slightly dished, as shown, and is provided with a shoulder b at the base of the threaded stud The shoulder b oo-acts with the end of the shank a to tightly clamp the fabric be' tween them when the parts are applied,` and when so applied the teeth or spurs a will be pressed into the fabric and secure a hold thereon which will prevent the part A from unscrewing. To prevent the part B from becoming unscrewed, and thereby lock both parts fast upon the Ofarment, said part orv disk B is provided with teeth b2 stamped or struck outwardly therefrom, and disposed as shown to enter the fabric and catch the same upon a movement of the disk backward.

Inasmuch as the part A is handled to a considerable extent in buttoning and unbuttoning the garment the teeth of said part are forced into very intimate engagement with the fabric of the garment, while the part B not being subjected to any handling it is not necessary that the teeth engage to the same extent, said latter part being held mainly by the clamping of the parts on the garment.

The `application of the button will be readily understood by reference to the drawing, for after threading the stud b of the back B through the fabric the front or head portion A is placed to receive the threaded stud and is then screwed thereon until the fabric is tightly clamped between the shank a and shoulder b, and the two sets of teeth entering the fabric of the garment will prevent the IOO IIO

parts from unscrewing or becoming loose. In this manner the button is very securely held to the garment without liability of becoming loose or tearing ofi, and inasmuch as the screw-threaded stud which passes through the garment is very small it does not injure the fabric.

The button may be removed by simply passing a knife-blade between the garment and the back-plate B, to iirst release the teeth b2 from the fabric and then prevent them from engagement while the said back-plate is being unscrewed from the other part of the button. For this purpose the teeth b2 are located on one side portion of the disk so that the knife-blade can 'engage both teeth, as indicated in dotted lines in Fig. 3 of the drawings.

Instead of having the shank integral with the head of the button it. may be a separate iece, as shown in Fig. 5, and secured to the ead by upsetting the outer end thereon.

It will be readily seen that by the particular construction herein shown and described I provide a very simple and cheap arrangement for an emergency button Which will require no mechanical means for its application.

Having described my invention7 I claim:

In a removable emergency button, the combination, of a head having a hollow shank internally threaded and provided at its outer end with inclined teeth or penetrating points, and a back' piece or dislr having a screw-threaded stud with a shoulder at the inner end thereof adapted to be opposed to the teeth or points on the shank of the head, said back piece or disk also having two inclined teeth located at one side portion of the disk7 whereby said head and back piece are provided with oppositely inclined engaging points, and those on the back piece disposed to be readily disengaged for removing the button, as herein shown and described.

ln testimony whereofl have signed my name to this specification in the presence oi' two subscribing Witnesses.

URBAN S. ALZ.

Witnesses:

WV. B. BRENIZE, EMIL R. DENHARD. 

